The slider allows you to select a date range. You can also select a narrow range and move that range as a whole up and down the slider (e.g. using the date slider you can slide a time window. Using that facility, you can thus investigate how the HPAI epidemiology evolves across the landscape over time [i.e. a manual animation if you like]).
In the map chocolate markers are for poultry and blue for wild birds.
The last entry in the database (i.e. not neccessarily the start of the latest outbreak) is from 2025-03-27.